Ice snaps into lid! Portion control marking. 2 ice packs included ice snaps into lid! Benefits & uses. Perfect size to fit in most lunch bags! No more plastic baggies! No more squished snacks! Perfect for school, work or weekend activities! freezer safe. Microwave safe. Dishwasher safe. 4 containers included. 2 ice packs included. Note: Plastic containers are freezer, microwave, and top rack dishwasher safe.